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skongshoj

Member

Registered: 2015-03-30

Posts: 12

Firefox FFMpeg and VA-API?

Greetings, gentlebeings!

After Firefox switched to using FFMpeg rather than GStreamer, I've seen a sharp rise in CPU usage and battery consumption when viewing HTML5 videos.
Taking a look at about:support reveals:

  Supports Hardware H264 Decoding: No;

LIES! My XPS-13 has a Broadwell in it, it can damn well decode H264 in hardware. In fact, vainfo agrees with me here.

I guess this is because Firefox' FFMpeg doesn't talk to VA-API. Do any of you know a good way to fix this deplorable situation?

x33a

Forum Fellow

Registered: 2009-08-15

Posts: 4,587

Re: Firefox FFMpeg and VA-API?

What's the output of

media.hardware-video-decoding.enabled

from about:config in firefox?

skongshoj

Member

Registered: 2015-03-30

Posts: 12

Re: Firefox FFMpeg and VA-API?

What's the output of

media.hardware-video-decoding.enabled

from about:config in firefox?

"true", as per the default.

Gusar

Member

Registered: 2009-08-25

Posts: 3,607

Re: Firefox FFMpeg and VA-API?

It's not implemented yet. This is the bug to watch: https://bugzilla.mozilla.org/show_bug.cgi?id=1210727